from tkinter import *
print("Введите начальную координату X:")
X=int(input())
print("Введите начальную координату Y:")
Y=int(input())
print("Введите начальную координату N:")
N=int(input())
coords=[0, 0, 10, 0, 10, 10, 20, 10, 20, 0, 30, 0, 30, 20, 0, 20]
if N == 0 and X>=0 and X<=500 and Y>=0 and Y<=500:
     pass
else:
     if N > 0 and 0*N+X>=0 and 0*N+Y>=0 and 20*N+X<=500 and 20*N+Y<=500:
          pass
     else:  
          if N < 0 and 20*N+X>=0 and 20*N+Y>=0 and 0*N+X<=500 and 0*N+Y<=500:
               pass
          else:
               print ("размер фигуры превышает максимальный размер поля")
               exit()
root = Tk()
root.title("ИТ марафон")
root.geometry("500x500")
canvas = Canvas(bg="white",width=500,height=500)
canvas.pack(anchor=CENTER,expand=1)
canvas.create_polygon(coords[0] *N+X,coords[1] *N+X,
                      coords[2] *N+X,coords[3] *N+X,
                      coords[4] *N+X,coords[5] *N+X,
                      coords[6] *N+X,coords[7] *N+X,
                      coords[8] *N+X,coords[9]*N+X,
                      coords[10]*N+X,coords[11]*N+X,
                      coords[12]*N+X,coords[13]*N+X,
                      coords[14]*N+X,coords[15]*N+X)
root.mainloop()
